JP4603439B2 - Rollover protection device - Google Patents

Description

  The present invention relates to a rollover protection device that supports a vehicle body with respect to the ground when the vehicle rolls over.

The rollover protection device mainly reduces the impact on the ground when the vehicle rolls over. The rollover protection device supports the vehicle body with a support member (roll bar) such as a pipe member disposed above the head of the occupant. Protect. The support member includes a fixed type and a movable type.
In the movable type, there is a technique for pulling out the support member to the upper part of the occupant's head when necessary (see, for example, Patent Document 1).
German Patent Application Publication DE 19838989C1 Specification

  The roll bar is used for the purpose of securing a space between the occupant and the ground when the automobile rolls over. However, if the occupant is not wearing a seat belt or is not properly worn, there is a possibility that the occupant directly contacts the ground.

  Even if the space above the occupant is secured by the roll bar, in the event of a rollover caused by a side collision of an automobile, the collision occurs unless there is a separately installed side airbag or side curtain airbag device. The passengers could not be sufficiently protected from the impact. However, depending on the type of car, it was difficult to prepare.

  In the present invention, when an automobile capable of storing and opening a roof rolls over, the airbag main body is interposed between the occupant and the ground, receives the occupant, and can reduce the impact applied to the occupant. It is an object of the present invention to provide a rollover protection device that can regulate the movement of the camera.

The invention according to claim 1 is the rollover protection device in which the vehicle body support member along the seat is attached so as to support the vehicle body when the vehicle rolls over, and the vehicle body support member is movable, and is disposed at the top of the vehicle body support member. Te, a movable head bag housing portion which is pushed becomes higher direction height of the body supporting member during the vehicle rollover, an air cylinder for pushing up the movable head bag housing portion, integrally disposed on the movable head bag housing portion to, after reaching the occupant's head near to sit on the seat and movable head bag housing portion is pushed up, by deploying toward the space above the passenger's head, the air bag to reduce the buffer of the occupant When the air bag operation is controlled on the basis of the combustion gas to operate the air bag and blown inflator at least the airbag, the information of the vehicle condition detecting sensor disposed the operation of the air bag to the vehicle A control unit, and connecting the generated combustion gas in an inflator for blowing the air cylinder tube, a pilot-operated valve the generated combustion gas is attached to the inflator to blowing the air bag, includes a, when the inflator is activated, the combustion gas Flows into the air cylinder through the pipe, pushes up the movable head bag storage, and when the pressure in the inflator reaches a predetermined pressure, the pilot operation valve is opened to open the combustion gas into the air bag. It is characterized by being blown into and deployed .

In the invention according to claim 1, the vehicle body support member and movable, and a vehicle body supported by being placed on top of member body supporting height movable head bag housing portion to be pushed higher direction member during vehicle rollover An air cylinder that pushes up the movable head bag storage portion and a movable head bag storage portion of the vehicle body support member that are integrally disposed so that the movable head bag storage portion is pushed up and near the head of the occupant sitting on the seat An air bag that cushions the occupant by deploying toward the space above the head of the occupant, an inflator that blows at least the combustion gas that activates the airbag into the airbag , an air bag operation control unit for controlling the operation based on the information of the vehicle condition detecting sensor disposed on the vehicle, and connected to an inflator for blowing the generated combustion gas to the air cylinder tube Includes a pilot operated valve which is mounted on the inflator for blowing the generated combustion gas to the air bag, and the inflator is activated, the combustion gas flows into the air cylinder via a tube, pushes up the movable head bag housing portion, continued When the pressure in the inflator reaches a predetermined pressure, the pilot operation valve is opened to inject combustion gas into the airbag and deploy it.When the vehicle starts to roll over, the pipe connected to the inflator After the movable head bag storage is pushed up by the guided combustion gas and reaches the vicinity of the head of the occupant sitting on the seat, when the pressure in the inflator reaches a predetermined pressure, the pilot operation valve opens. , interest that the air bag is interposed between the occupant and the ground surface, the occupants, it is possible to mitigate the impact applied to the occupant There is.

Further, in the rollover protection device, a movable head bag storage portion that is disposed on the top of the vehicle body support member and is pushed up in a direction in which the height of the vehicle body support member is increased when the vehicle rolls over, and the generated combustion gas is air cylinder A pipe connected to the inflator for blowing into the inflator and a pilot operation valve attached to the inflator for blowing the generated combustion gas into the airbag, and when the inflator is activated, the combustion gas flows into the air cylinder through the pipe, When the movable head bag storage part is pushed up, and the pressure in the inflator reaches a predetermined pressure, the pilot operation valve is opened, so that the combustion gas is blown into the airbag and deployed, so that the vehicle rolls over. When start, after reaching the occupant's head near to sit on the seat and movable head bag housing portion is pushed up, inside the inflator When the force reaches a predetermined pressure, by the pilot operated valve is opening operation, the air bag is interposed between the occupant and the ground surface, the occupants, even when restraint of the seat belt against the occupant is not sufficient, exterior Impact due to discharge or the like can be reduced.

Further, since the airbag is integrally provided in the movable head bag storage portion of the vehicle body support member, the buffer member can be attached to the vehicle body simply by assembling the vehicle body support member to the vehicle body. That is, it is not necessary to separately assemble the airbag and the vehicle body support member on the assembly line, and the time for installing the airbag can be reduced.

In the invention according to claim 1, the airbag is disposed at the top of the vehicle body support member and is disposed in the movable head bag storage unit that is pushed up in the direction in which the height of the vehicle body support member is increased when the vehicle rolls over. After the head bag storage part is pushed up and reaches the vicinity of the head of the occupant sitting on the seat, when the pressure in the inflator reaches a predetermined pressure, the pilot operation valve is opened to open the head of the occupant sitting on the seat. The vehicle body support member secures a space between the occupant's head and the ground, and the deployed airbag (airbag body) is connected to the occupant's head and the ground. There is an advantage that it is possible to receive an occupant's head and relieve an impact applied to the occupant's head.

In the invention according to claim 1 , since the vehicle body support member is movable, the height of the vehicle body support member is reduced, the vehicle body support member can be reduced in size, and the space for arranging the vehicle body support member can be saved. There is an advantage.

In the invention according to claim 1 , since the vehicle body support member is movable, the height of the vehicle body support member is reduced, the vehicle body support member can be miniaturized, and the appearance can be improved.

In the invention which concerns on Claim 1 , since a buffer member is an airbag, there exists an advantage that a buffer member can be expand | deployed rapidly.

In the invention according to claim 1, the inflator to operate the air bag, connect the air cylinder connected to the movable head bag housing portion of the body supporting member movable in the tube, the pressure in the inflator at a predetermined pressure When it reaches, the pilot operation valve is opened, and the combustion gas is blown into the airbag and deployed to operate with the same inflator, so the movable head bag storage part of the movable body support member is movable. Therefore, there is an advantage that the drive source for causing the drive source and the drive source for deploying the airbag can be shared, and the production cost can be reduced.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a diagram for explaining a rollover protection device (first embodiment) according to the present invention.
The rollover protection device 11 according to the first embodiment is employed in a vehicle 12, and includes a vehicle body support member 14 disposed in a passenger seat 13, a buffer member 15 disposed in the vehicle body support member 14, and a center of the vehicle 12. A buffer member operation control unit 16 that is an airbag operation control unit disposed in the vehicle body, and a vehicle body support member 14 and a buffer member 15 that are similarly disposed in the driver's seat. Reference numeral 17 denotes a control device for the vehicle 12, and 18 denotes a vehicle state detection sensor.

  The vehicle 12 is a convertible that can open and close the roof. When the roof is closed, the buffer member 15 is deployed below the roof. The roof may be made of resin or metal.

The vehicle condition detection sensor 18 is an existing sensor that detects a rollover or collision of the vehicle 12, and its specification is arbitrary.
The vehicle body support member 14 has metal pipes 22 and 22 (see FIG. 2) fixed to the vehicle body 21 below the left and right sides of the passenger seat 13.

FIG. 2 is a perspective view of the rollover protection device (first embodiment) according to the present invention, with the buffer member 15 seen through.
The buffer member 15 has a metal case 25 integrally attached to the top 24 of the vehicle body support member 14, covers the case 25 with a resin decorative panel 26, and forms an opening lid 27 on the case 25 and the decorative panel 26. In the case 25, an inflator (gas generating device) 31 and an airbag main body 32 that is an airbag that is deployed with combustion gas of the inflator (gas generating device) 31 are arranged.

  The inflator (gas generating device) 31 is an existing inflator, and is substantially the same as an inflator disposed on an instrument panel for a passenger seat, for example.

  Although the rollover protection device 11 has been described for the passenger seat 13, the vehicle body support member 14 and the buffer member 15 are naturally arranged in the driver's seat as well (symmetrical with respect to the vehicle body center).

FIG. 3 is a first action diagram showing the operating state of the rollover protection device (first embodiment) of the present invention during rollover.
In the rollover protection device (first embodiment) 11, when the vehicle 12 starts to roll over, the airbag main body 32 is deployed above the occupant M as indicated by arrows a2 and a2. A space is secured between the M and the ground G, and the deployed airbag body 32 is interposed between the occupant M and the ground G to receive the occupant M and reduce the impact applied to the occupant M. .

4 (a) and 4 (b) are second operational views of the rollover protection device (first embodiment) of the present invention. This will be described with reference to FIGS.
Specifically, when the vehicle 12 starts to roll over, the control device 17 determines that the rollover has started to occur based on the information of the vehicle state detection sensor 18, and the buffer member operation control unit based on the rollover information of the control device 17. 16 operates an inflator (gas generator) 31. The inflator (gas generating device) 31 operates to inject combustion gas into the airbag main body 32 to inflate (expand). The inflating airbag body 32 breaks the tear line of the opening lid portion 27 set in the case 25 and the decorative panel 26, opens the opening lid portion 27 as indicated by an arrow a1, and is in the vicinity of the head H of the occupant M. Expands into the upper space as indicated by arrows a2 and a2.

  Thus, in the rollover protection device 11, the vehicle body support member 14 is attached to the vehicle body 21 near the seat (passenger seat) 13 so as to support the vehicle body 21 when the vehicle 12 rolls over (see FIG. 3). 14 and a buffer member 15 for buffering the occupant M, and a buffer member operation control unit 16 for controlling the operation of the buffer member 15 based on information from a vehicle state detection sensor 18 disposed on the vehicle 12. When the vehicle 12 starts to roll over, the cushioning member 15 (airbag body 32) is activated (deployed) above the occupant M, and the actuated cushioning member 15 (airbag body 32) is connected to the occupant M. It is interposed between the ground G, the occupant M can be received, and the impact applied to the occupant M can be reduced.

  Further, the rollover protection device 11 can reduce the impact due to the release from the vehicle or the like even when the restraint of the seat belt on the occupant M is not sufficient.

  Furthermore, in the rollover protection device 11, since the buffer member 15 is an airbag (airbag body) 32, the buffer member 15 can be quickly deployed.

  The buffer member 15 is disposed on the top 24 of the vehicle body support member 14 and expands into a space near the head H of the occupant M sitting on the seat (passenger seat) 13. A space is ensured between the ground G and the deployed cushioning member 15 (airbag body 32) is interposed between the head H of the occupant M and the ground G to receive the head H of the occupant M. The impact applied to the head H of the occupant M can be reduced.

Next, “another embodiment” of the rollover protection device of the present invention will be described.
FIG. 5 is a diagram illustrating a rollover protection device according to the second embodiment. The same components as those in the embodiment shown in FIG.

  The rollover protection device 11B of the second embodiment includes a vehicle body support member 42 disposed in the passenger seat 13, left and right buffer members 43 and 43 (see FIG. 6) disposed in the vehicle body support member 42, and A buffer member operation control unit 16 disposed in the center, a vehicle body support member 42 (see FIG. 6) and buffer members 43, 43 disposed similarly in the driver's seat are provided.

FIG. 6 is a perspective view illustrating the rollover protection device according to the second embodiment. This will be described with reference to FIGS.
The vehicle body support member 42 has a lower bag storage portion 45, 45 attached to the vehicle body 21 below the right and left of the passenger seat 13, and a horizontal bag storage portion that is a horizontal portion connected to the rear end of the lower bag storage portion 45, 45. The upper bag storage portions 47 and 47 are attached to the upper ends of the horizontal bag storage portions 46 and 46, and the top ends of the upper bag storage portions 47 and 47 are connected by the upper beam portion 48. .

  The buffer member 43 forms an opening lid 49 (... indicates a plurality. The same applies hereinafter) in the left, right, bottom, side, and top bag storage portions 45 to 47, and the left side, bottom, side, and top. An inflator (gas generating device) 51, 52, 53 and an airbag main body 54 that is deployed with combustion gas of the inflator (gas generating device) 51, 52, 53 are arranged in the bag storage portions 45, 46, 47, respectively. Inflator (gas generator) 55, 56, 57 and airbag main body 58 deployed with combustion gas of inflator (gas generator) 55, 56, 57 in lower, side, and upper bag storage portions 45, 46, 47, respectively. Arranged.

The inflator (gas generating device) 51 is an existing inflator, and is substantially the same as an inflator disposed on an instrument panel for a passenger seat, for example.
Inflators (gas generators) 52, 53, 55, 56, 57 are substantially the same as the inflator (gas generator) 51.

FIG. 7 is a first operation diagram of the rollover protection device according to the second embodiment.
In the rollover protection device 11B of the second embodiment, when the vehicle 12 starts to roll over, the airbag main bodies 54 and 58 (see FIG. 8) extend from the left and right feet of the occupant M to the left and right of the head H with the arrow a3. , A4, a5, the deployed airbag bodies 54, 58 are interposed between the left and right feet of the occupant M and the ground G across the left and right of the head H, and receive the occupant M. Therefore, the impact applied from the left and right feet of the occupant M to the left and right of the head H can be reduced.

FIG. 8 is a second operation diagram of the rollover protection device according to the second embodiment. This will be described with reference to FIGS.
Specifically, when the vehicle 12 starts to roll over, the control device 17 determines that rollover has started based on the information of the vehicle state detection sensor 18, and the buffer member operation control unit based on the rollover information of the control device 17. 16 operates the left and right inflators (gas generators) 51-53, 55-57. The left and right inflators (gas generators) 51 to 57 are operated to simultaneously inject and expand (expand) the left and right combustion gases into the left and right airbag bodies 54 and 58, respectively. The left and right inflating airbag bodies 54, 58 break and open the tear lines of the opening lid portions 49 ... formed in the left and right lower, side, and upper bag storage portions 45 to 47, and open the left and right spaces 61 of the occupant M. , 62.

  As described above, in the rollover protection device 11B, the buffer members 43 and 43 are disposed in the lateral portions (the left and right lower / lateral / upper bag storage portions) 45 to 47 of the vehicle body support member 42 and 61 and 62, the movement of the occupant M to the left (in the direction of the arrow a6) and the movement to the right (in the direction of the arrow a7) are restricted, and the impact is absorbed. Therefore, the impact applied from the left and right feet of the occupant M to the left and right of the head H can be reduced.

  Further, in the rollover protection device 11B, it is possible to reduce the impact of the primary collision (front or side) where the occupant M hits the vehicle body 12.

  Furthermore, in the rollover protection device 11B, the occupant M moves toward the inside of the vehicle body 21 (the driver's seat is in the direction of arrow a6 and the passenger seat 13 is in the direction of arrow a7). It can prevent by restraining the passenger | crew M with the buffer members 43 and 43 expanded to the horizontal space 61 and 62. FIG.

  In addition, in the rollover protection device 11B, the occupant M moves toward the inside of the vehicle body 21 (the driver's seat is in the direction of arrow a6 and the passenger seat 13 is in the direction of arrow a7). When waking up, the impact can be reduced.

  In addition, in the rollover protection device 11B, the movement of the occupant M can be restricted by restraining the occupant M with the buffer members 43 and 43 deployed in the lateral spaces 61 and 62. As a result, the seat belt Can be prevented from slipping out (when improperly worn) and misalignment.

  FIG. 9 is a diagram illustrating a rollover protection device according to the third embodiment. The same components as those in the embodiment shown in FIGS. 1 and 2 are given the same reference numerals and description thereof is omitted.

  The rollover protection device 11C according to the third embodiment includes a vehicle body support member 71 disposed in the passenger seat 13, a buffer member 72 disposed above the vehicle body support member 71, the buffer member operation control unit 16, and a driver seat. The vehicle body support member 71 and the buffer member 72 are similarly arranged.

  The vehicle body support member 71 fixes the column portions 74 and 74 below the right and left of the passenger seat 13 and to the vehicle body 21, and stores the U-shaped head bag storage portion 75 at the upper end of the column portions 74 and 74 and the buffer member 72. It is attached to do.

  The buffer member 72 forms an opening lid 77... In the head bag storage portion 75, and inflators (gas generation devices) 81, 82, 83 and inflator (gas generation device) 81 are provided in the head bag storage portion 75. , 82 and 83, an airbag body 84 that is deployed with combustion gas is disposed.

The inflator (gas generator) 81 is an existing inflator, and is substantially the same as, for example, an inflator disposed on an instrument panel for a passenger seat.
The inflators (gas generators) 82 and 83 are substantially the same as the inflator (gas generator) 81.
The airbag main body 84 includes a parietal bag portion 85 (see FIG. 10), and a lateral head bag portion 86 (see FIG. 10) and 86 formed to be connected to the left and right ends of the parietal bag portion 85.

FIG. 10 is an operation diagram of the rollover protection device according to the third embodiment. This will be described with reference to FIGS.
In the rollover protection device 11C of the third embodiment, when the vehicle 12 starts to roll over, the airbag main body extends from the top Ht of the head H of the occupant M to the right side H2 extending from the left side H1 of the head H. Since 84 is deployed as indicated by arrows a8 and a8, the deployed airbag body 84 is interposed between the occupant M and the ground G and receives the occupant M. Therefore, the impact applied to the head H of the occupant M can be reduced.

  Specifically, when the vehicle 12 starts to roll over, the control device 17 determines that rollover has started based on the information of the vehicle state detection sensor 18, and the buffer member operation control unit based on the rollover information of the control device 17. 16 operates the inflator (gas generator) 81-83. The inflators (gas generators) 81 to 83 are operated to inject combustion gas into the airbag main body 84 to inflate (expand). The inflating airbag body 84 breaks the tear line of the opening lid portion 77... And opens the opening lid portion 77..., From the top portion Ht of the head H to the left and right side portions H 1 and H 2 of the head H. Expand to cover over.

  As described above, in the rollover protection device 11C of the third embodiment, the buffer member 72 has a shape that covers from the top Ht of the head H to the left and right sides H1 and H2 of the head H. Therefore, the impact applied to the head H of the occupant M can be reduced.

  Further, in the rollover protection device 11C of the third embodiment, the movement of the head H in the left direction (the direction of the arrow b1) and the movement of the head H in the right direction (the direction of the arrow b2) are restricted. be able to.

  Furthermore, in the rollover protection device 11C according to the third embodiment, the impact on the head H when the vehicle 12 rolls over can be further reduced.

FIG. 11 is a diagram illustrating a rollover protection device according to the fourth embodiment.
FIG. 12 is a view taken in the direction of arrow 12 in FIG. 11 and is a front view of the fourth embodiment. The state which removed the cover 108 is shown. This will be described with reference to FIG.

  The rollover protection device 11D according to the fourth embodiment is similar to the vehicle body support member 91 disposed in the passenger seat 13, the buffer member 92 disposed in the vehicle body support member 91, the buffer member operation control unit 16, and the driver seat. The vehicle body support member 91 and the buffer member 92 are provided.

  The vehicle body support member 91 is movable, and slide means 93 and 94 are attached to the vehicle body 21 under the right and left sides of the passenger seat 13 and the slide members 95 and 96 of the left and right slide means 93 and 94 are connected to each other. The movable head bag storage portion 97 and the movable beam member 101 are attached as described above, the fixed beam member 104 is attached to the fixing members 102 and 103 of the left and right slide means 93 and 94, and the fixed beam member 104 and the movable head bag storage portion 97 are attached. The driving means 105 is connected between the two.

In the vehicle body support member 91, a stopper mechanism 106 is disposed between the movable beam member 101 and the right slide means 94, and a shock absorber 107 is disposed on the left slide means 93. Reference numeral 108 denotes a cover that covers between the fixing members 102 and 103 of the left and right slide means 93 and 94.
The height Hb of the vehicle body support member 91 is substantially the same as that of the roof storage portion 109.

The driving means 105 is an air cylinder, and slides in the cylinder body 111, a gas inlet / outlet port 112 disposed at the rear end of the cylinder body 111, a discharge port 113 disposed at the front end, and the cylinder body 111 (in the direction of arrow b3). ).
The stopper mechanism 106 attaches a latching member 115 to the movable beam member 101, attaches a latching claw mechanism 117 having a claw portion 116 that hooks on the latching member 115 to the right slide means 94, and moves the movable head bag storage portion 97. The upper limit position 118 is fixed.

  The buffer member 92 has an opening lid 121 formed in the movable head bag storage portion 97, an inflator (gas generation device) 122 is disposed in the lower portion, and the inflator (gas generation device) 122 is disposed in the movable head bag storage portion 97. An airbag main body 123 that deploys with the combustion gas is arranged.

  The inflator (gas generator) 122 is a drive source for moving the movable vehicle body support member 91 and a drive source for deploying the airbag main body 123. Moreover, it is an existing inflator, for example, is substantially the same as the inflator arranged on the instrument panel for the passenger seat.

  A pilot operation valve 124 for injecting the generated combustion gas into the airbag body 123 is attached to the inflator (gas generator) 122, and a pipe 125 for injecting the combustion gas into the driving means (air cylinder) 105 is connected.

13 is a cross-sectional view taken along line 13-13 of FIG.
The left slide means 93 has rollers 126 and 126 mounted in the fixed member 102.
The right slide means 94 has rollers 126 and 126 mounted in the fixed member 103.
Although the slide members 95 and 96 are fitted via the rollers 126..., The slide members 95 and 96 can be fitted without using the rollers 126.
The cross-sectional shape of the fixing members 102 and 103 is arbitrary.
The cross-sectional shape of the slide members 95 and 96 is arbitrary.

FIG. 14 is a first operation diagram of the rollover protection device according to the fourth embodiment.
FIG. 15 is a second operation diagram of the rollover protection device according to the fourth embodiment. This will be described with reference to FIG.
In the rollover protection device 11D of the fourth embodiment, when the vehicle 12 starts to roll over, the movable head bag storage portion 97 jumps out as indicated by an arrow b4, and immediately after the popping out, the airbag main body 123 appears as indicated by an arrow b6. Therefore, the deployed airbag body 123 is interposed between the occupant M and the ground G and receives the occupant M. Therefore, the impact applied to the occupant M can be reduced.

  Specifically, when the vehicle 12 starts to roll over, the control device 17 determines that rollover has started based on the information of the vehicle state detection sensor 18, and the buffer member operation control unit based on the rollover information of the control device 17. 16 operates the inflator (gas generator) 122 arrange | positioned at the lower part. When the inflator (gas generator) 122 is activated, the combustion gas flows into the driving means (air cylinder) 105 via the pipe 125, and pushes up the movable head bag storage portion 97 as shown by an arrow b4. Subsequently, when the pressure in the inflator (gas generator) 122 reaches a predetermined pressure, the pilot operation valve 124 opens, so that the combustion gas is blown into the airbag body 123 to be expanded (expanded). The inflating airbag body 123 breaks the tear line of the opening lid 121, opens the opening lid 121 as indicated by the arrow b5, and moves to the upper space near the head H of the occupant M as indicated by the arrow b6. expand.

  Thus, in the rollover protection device 11D of the fourth embodiment, the vehicle body support member 91 is movable, so the height Hb of the vehicle body support member 91 is reduced, and the vehicle body support member 91 is downsized. It is possible to save space for arranging the vehicle body support member 91.

  Further, since the vehicle body support member 91 is movable, the height Hb of the vehicle body support member 91 is reduced, the vehicle body support member 91 can be reduced in size, and the appearance can be improved.

  In the rollover protection device 11D of the fourth embodiment, a driving means (air cylinder) 105 of a movable vehicle body support member 91 is connected to an inflator (gas generator) 122 that operates an airbag (airbag body) 123. Since the same inflator (gas generator) 122 is operated, an inflator (gas generator) that is a drive source for moving the movable vehicle body support member 91 and a drive source for deploying the airbag main body 123 is used. ) 122 can be shared, and the production cost can be reduced.

  Although the rollover protection device of the present invention is convertible in the embodiment, it can also be applied to a sedan that does not open the roof, and can be used in general automobiles.

  The rollover protection device of the present invention is suitable for conversion.

The figure explaining the rollover protection apparatus (1st Embodiment) of this invention 1 is a perspective view of a rollover protection device (first embodiment) according to the present invention. 1st operation | movement figure which shows the operation state at the time of rollover of the rollover protection apparatus (1st Embodiment) of this invention Second Operational View of Rollover Protection Device (First Embodiment) of the Present Invention The figure explaining the rollover protection apparatus of 2nd Embodiment The perspective view explaining the rollover protection device of a 2nd embodiment First operation diagram of roll-over protection device according to second embodiment Second Operational View of Rollover Protection Device of Second Embodiment The figure explaining the rollover protection apparatus of 3rd Embodiment Operational diagram of the rollover protection device of the third embodiment The figure explaining the rollover protection apparatus of 4th Embodiment 12 arrow view of FIG. 13-13 sectional view of FIG. First Action Diagram of Rollover Protection Device of Fourth Embodiment Second Action Diagram of Rollover Protection Device of Fourth Embodiment

Explanation of symbols

  11, 11B, 11C, 11D ... rollover protection device, 12 ... vehicle, 13 ... seat (passenger seat), 14, 42, 71, 91 ... body support member, 15, 43, 72, 92 ... buffer member, 16 ... Buffer member operation control unit, 18 ... vehicle condition detection sensor, 21 ... vehicle body, 24 ... top, 32, 54, 84, 123 ... airbag main body, 45-47 ... horizontal part (left / right lower / horizontal / upper bag storage part) , 61, 62 ... space, 105 ... driving means (air cylinder), 122 ... inflator (gas generating device), Ht ... top of the head, H1, H2 ... left and right sides of the head.

Claims (1)

In a rollover protection device in which a vehicle body support member along the seat is attached to support the vehicle body when the vehicle rolls over,
The body supporting member is a movable,
And the vehicle body is placed on top of the support member, the said body supporting height movable head bag housing portion to be pushed increases direction member during vehicle rollover,
An air cylinder that pushes up the movable head bag storage;
Before SL arranged integrally with the movable head bag housing portion, after the movable head bag housing portion reaches the occupant's head near sitting on the seat is pushed up, the upper space of the occupant's head An airbag that cushions the occupant by deploying toward
An inflator that blows at least the combustion gas that operates the airbag into the airbag;
An airbag operation control unit for controlling the operation of the airbag based on information of a vehicle state detection sensor disposed in the vehicle;
A pipe connected to the inflator for blowing the generated combustion gas into the air cylinder;
A pilot operated valve attached to the inflator for injecting the generated combustion gas into the airbag ,
When the inflator is activated, the combustion gas flows into the air cylinder through the pipe, pushes up the movable head bag storage portion, and then, when the pressure in the inflator reaches a predetermined pressure, the pilot A rollover protection device characterized in that the combustion gas is blown into the airbag and deployed by opening an operation valve .

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